Inside Delivery -- Customer needs truck driver to physically bring boxes inside of business, garage, house, etc. This incurs an extra delivery charge.
Lift Gate Delivery -- Customer has no dock & forklift and needs a truck with a special "lift gate" to lift product to down to ground level. This incurs an extra delivery charge and often adds a day to transit time.
Residential Delivery -- Addresses NOT in a commercially zoned area, most often a residential house although churches are normally included in this category. Normally needs delivery appointment, lift gate &/or inside delivery. This incurs an extra delivery charge.